Mechanism for driving reciprocating-bed printing-presses.



PATENTED AUG. 22, 1905.

s sums-41mm 1.

H. M. BARBER.

MECHANISM FOR DRIVING REGIPROGATING BED PRINTING PRESSES.

APPLICATION FILED MAR. 29. 1905.

PATENTED AUG. 22, 1905.

H Mu BARBER. MECHANISM FOR DRIVING REGIPROGATING BED PRINTING PRESSES.

APPLIOATIOH FILED MAR. 29. 1905.

a sums-sum 2.

No. 797,789. PATENTBDAUG. 22, 1905.

' H. M. BARBER. MECHANISM FOR DRIVING REOIPROGATING BED PRINTING PRBSSES.

APPLICATION FILED MAR. 29. 1905- 3 SHEETS-SHEET 3.

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NI'TED STATES IATENT OFFICE.

OF NEW JERSEY.

1 HOWARD M. BARBER, OF STONINGTON, CONNECTICUT, ASSIGNOR .TO C. B. COTTRELL & SONS COMPANY, OF NEW YORK, N. Y., A CORPORATION,

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed March 29, 1905. Serial No. 252,619.

To all whont if; may concern:

Be it known that I, HOWARD M. BARBER, a citizen of the United States, and a resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Mechanism for Driving Reciprocating-Bed Printing-Presses, of which the following is a specification.

In a driving mechanism embodying this ini vention there is what has been commonly known as a mangle-movement consisting of a rack and a gear which, carried by a jointed shaft, runs alternately above and below the rack for moving the bed in opposite directions. In previous applications of this movement to the driving of printing-press beds the rack has been fixedly attached to the bed; but according to the present invention it is loose that is to say, detached from the bedand carries a supplementary rack which is geared with a rack on the bed through an intermedi ate shaft and pinions.

The present invention consists in certain combinations hereinafter described and claimed, in which such detached mangle-rack constitutes an essential element and by which some important advantages which will be hereinafter explained are obtained.

In the accompanying drawings, which represent as much of a reciprocating-bed printing-press as is necessary to illustrate my invention, Figure 1 is an end elevation; Fig. 2, a transverse vertical section taken in front of the shaft of the mangle-movement and of the intermediate shaft hereinbefore mentioned; Fig. 3, a longitudinal vertical section taken approximately on the line 3 3 of Fig. 2; Fig. 4:, a diagram of the gearing for driving the ink-distributing apparatus. Fig. 5 represents the gearing for driving the impression-cylinder; Fig. 6, a longitudinal vertical section taken approximately in the line 6 6 of Fig. 1; Fig. 7, a longitudinal section of the bed and part of the driving mechanism; Fig. 8, a detail view to be hereinafter explained.

10 11 12 designate the framing of the ma chine, including the horizontal ways 11 for the roller-frames 13, on which the reciprocating bed let is supported and runs in a wellknown mannerl Under the bed and extending lengthwise of and nearly the whole length of the framing there is suitably constructed within or attached to one side of the latter a fixed slideway 15 (represented in Figs. 1 and 2) of dovetail cross-section, in which runs a slide 16, on which the mangle-rack 17 18, detached from the bed, is firmly secured. This rack, ex cept as to its being detached from the bed, is or may be like the mangleraeks heretofore used, which have been attached to the bed, having a straight row of teeth 17 and a semicircular shoe 18 at each end, and the said rack is driven in the usual way by the operation upon it of the gear 19 on the vibrating member 20 of the mangle-shaft, which is connected by a universal joint 21 of any suitable kind with the horizontal member 22 of said shaft, which runs in a fixed bearing in or on the framing, the said vibrating member 20 running in a bearing 23, which slides in a stationary vertical guide 24, carried by the girth 12 of the framing. The mangle-rack 17 18 thus applied carries on its upper edgea supplemental rack 30, represented as an ordinary straighttoothed rack, which meshes with and drives a pinion 25 on a second shaft 26, which I term the intermediate shaft, which is arranged transversely to the bed, between it and the slideway 15, in suitable fixed bearings in or on the framing. The said intermediate shaft carries two other pinions 27 of similar size to that 25, meshing with two ordinary toothed racks 28 on the under side of the bed, and so transmits to the bed a reciprocating movement corresponding with that given to the manglerack by the mangle-gear 19, but always in the opposite direction. One such pinion 27 and rack 28, arranged under the center of the bed, might be sufficient; but I prefer to use two, arranged, as represented, near the sides of the bed to eliminate all possibility of the bed getting out of square. In this operation the intermediate shaft 26 turns in one direction as the mangle-rack moves in one direction and turns in the reverse direction when the mangle-rack moves in the other direction.

The intermediate shaft 26 besides transmitting motion from the mangle-rack to the bed as described also gives motion to the rollerframes 13, upon which the bed runs, and for this purpose it carries a number of pinions 29, (see Figs. 2 and 6,) one of said pinions for each of said frames, meshing with a single rack 31, attached to the frame at one side thereof. These pinions 29 are half the diameter of those 27 which drive the bed, so that the rollerframes are caused to run back and forth halfthe distance within which the bed moves.

Fig. 8 represents a transverse section, on a larger scale than the other figures, of part of the bed 14, one of the string-pieces 11 of the framing containing the horizontal ways for the roller-frames 13 and the means for adjusting the bed laterally to the width of the impression-cylinder 32, and also shows part of the intermediate shaft 26 and one of the pinions 29 and racks 31 for driving the rollerframes, one of which is also shown. Said means for adjusting the bed consist of gibs 33, attached to the under side of the bed between two of the string-pieces l1 and capable of lateral adjustment thereon, and adjusting-screws 34L, screwing through lugs 35 on the bed and holding the said gibs against the sides of the string-pieces. The said intermediate shaft 26 also serves to give motion to the ink-distributing rollers, both those 36 for the distributing-table 37 and those 38 for the form, and for this purpose the said shaft is furnished with a spur-gear 39, which is geared with said rollers in any suitable manner. For driving the table distributing-rollers 36 the said gear 39 is represented in Fig. 4 as geared with the latter rollers through a train of gears 40 4:1 42 43 44, running on fixed studs 40* 41* 42* 43*45: secured in the framing. For driving the form distributing-rollers 38 the said gear 39 is shown in Fig. 4 as geared with the said rollers by a train of gears 45 46 47, running on fixed studs 45* 46* 47* on the framing. This bed driving mechanism permits the mangle-shaft to be brought much higher and nearer the bed than is practicable with the mangle-movement commonly used. One advantage of this higher position of the mangle- ,shaft is that for driving the impression-cylinder the latter may be brought directly into gear with the driving member 22 of the mangle-shaft by a pinion 48 on said member 22 and a gear 4C9 on the cylinder-shaft 50, thus dispensing with the intermediate gear commonly employed between the driving-pinion and the cylinder-gear. Another advantage of said position is that it permits a very high or deep transverse girth 12 to be employed in the framing directly under the center of the impression-cylinder. Then, so far as only the driving of the bed is considered, the weight carried by the bed is very much reduced by dispensing with the very heavy frame necessary for attaching the mangle-rack to it, the racks 28 employed on the bed in this case being of comparatively light weight. By thus reducing the weight carried by the bed the press may be run at a higher speed, and by making the bed and the mangle-rack move in opposite directions greater steadiness is given to the entire press.

hat I claim as my invention is- 1. In driving mechanism for a reciprocating-bed printing-press, the combination of a reciprocating rack detached from the bed and a rotary shaft arranged between said rack and the bed and in gear both with said rack and with the bed.

2. In driving mechanism for a reciprocating-bed printing-press, the combination of a reciprocating rack detached from the bed, a rack on the bed, a supplemental rack carried by the first-mentioned rack, a rotary shaft arranged between said supplemental rack and bed, and gearing on said shaftin engagement with said supplemental rack and the rack on the bed.

3. In driving mechanism for a reciprocating-bed printing-press, the combination of a reciprocating rack detached from the bed, a rotary shaft between said rack-and the bed, a supplemental rack carried by said reciprocating rack, a'rack on the bed, a pinion on said shaft meshing with said supplemental rack and another pinion on said shaft meshing with the rack on the bed.

4. In driving mechanism for a reciprocating-bed printing-press, the combination of a reciprocating rack detached from the bed, a rotary shaft between said rack and the bed, a supplemental rack carried by said reciprocating rack, two racks on the bed, and three pinions on said shaft, one of said pinions meshing with the said supplemental rack and two of them meshing respectively with the two racks on the bed.

5. In driving mechanism for a reciprocating-bed printing-press, the combination of a reciprocating mangle-rack detached from the bed, a jointed rotary mangle-shaft for driving said rack, a rack on the bed, a supplemental rack carried by said mangle-rack, a second rotary shaft arranged between said supplemental rack and bed, and gearing on said second shaft in engagement with said supplemental rack and the rack on the bed.

6. In driving mechanism for a reciprocating-bed printing-press, the combination with the bed and roller-frames and supports therefor on which the bed runs, of a reciprocating rack detached from the bed, a rotary shaft between said rack and bed, racks on the rollerframes, a pinion on said shaft in gear with said reciprocating rack, and pinions on said shaft meshing with the racks on the rollerframes.

7. In driving mechanism for a reciprocating-bed printing-press, the combination with the bed and roller-frames and supports therefor on which the bed runs, of a reciprocating rack detached from the bed, a rotary shaft between said rack and bed, a rack on the bed, racks on the roller-frames, a pinion on said shaft in gear with said reciprocating rack, a pinion on said shaft meshing with the rack on the bed, and pinions on said shaft meshing with the racks on the roller-frames.

8. In driving mechanism for a reciprocating-bed printing-press, the combination with the impression-cylinder and bed, of a reciprocating rack detached from the bed, a rotary shaft arranged between said rack and the bed and in gear With both, a rotary driving-shaft, a gear on said driving-shaft for driving said reciprocating rack and through it the bed, and tWo gears one on said driving-shaft and the other on the cylinder-shaft meshing directly with each other for driving the cylinder directly by the same shaft Which is in gear With and drives said. rack.

9. 1n driving mechanism for a reciprocatlng-bed printing-press, the combination of a reclprocatlng rack detached from the bed, a

rotary shaft arranged between said rack and the bed and in gear with both for driving the bed. by said rack, ink-distributing rollers and gearing between said rotary shaft and rollers for driving the latter from said shaft.

'In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 20th day of March, A. D. 1905.

HOWARD M. BARBER.

Witnesses:

A. R. STILLMAN, G. BURDICK. 

